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请教：最近需要使用cortex-a8中PMU进行cycle计数，但是始终不能产生PMCCNTR的溢出中断，请问溢出中断要怎么产生，它的中断号又怎么去获取？

lawen

根据手册描述，我是把PMINTENSET的C位写1了，在测试的时候没有产生一个IRQ中断。

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